First of all you should never flush needles or any other sharp objects down the toliet. If you are recapping the needles you need to be careful only the unused needles should be recapped FDA says. Don't just throw them away in the trash unless you break the needle part off first so be careful when dealing with needles.
Answer:When someone with celiac disease eats food that contains gluten, it triggers the immune system to attack the small intestine. The body forms antibodies, or proteins, that attempt to remove gluten from the body as if it were a foreign invader.